Please offer your good advices -
A friend of mine and I have a disagreement about sexing seedlings when placing them into the 12/12 cycle.
I say that you should sex ASAP when the plant is only 4-6 inches tall with just a couple of sets of opposing leaves.
He says that you should wait until the plant is older, fully mature, with many branches and ready to flower permanently; minimum 2-3 feet tall.
What do you think ladies & gents?